Calipers



June 26, l923 A. BLANGER ET Al. 1460'275 CALI PERS Filed Nov. ll, 1920 3 Sheets-Sheet l MW 6 5 M M ?SJ M m v n//// Il 6 3 xs 7 IN1.. Z Z ll'l @fill /w n 2. o 6 A l 2 e m J CALIPERS Filed Nov. ll. 1920 3 Sheets-Sheet 2 [Imaz/wv gaa 070/2 June 26, 1923. l ,1,460,275

A. BELANGER ET Al.

CALIPERS Filed Nov. ll 192C 5 Sheets-Sheet 5 Patented lune 26, i923.

.ANGUS BLANGER AND FREDERICK P. RICHES,. OF MONTREAL, QUEBEC, CANADA.

CALIPERS.

Application filed. November 11, 1920. Serial No. 4235387.

To all whom-15 may concer/a Be it known that we, Anous BLANGER and F Bunn-mon P. Rianne, both subjects of the King of Great Britain, residing at Montreal7 Province of Quebec, Canada, have invented certain new and useful lmprovements in Calipers; and we do hereby declare that the following is a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to new and useful improvements in calipers so constructed that materials of various natures can be accurately gauged.

Another' object of the invention is the provision of a pair of calipers having a diameter gauge which cooperates with the points in retaining the latter at exact diametrically opposite points upon the material to be gaugedj thus increasing the accuracy and efficiency of the device.

Still another'` object of the invention is the provision of a pair of calipers having a gauge by means of which the distance between the points can be accurately set-and a second gauge for gauging the diameter of the material to be worked upon in order that the accuracy and efficiency of the Calipers will be increased.

A further object of the invention isthe provision in a pair of calipers of a movable gauge point so constructed as to indicate in the thousandths of an inch the material to be worked upon.

A still further object of the invention is the provision of a pair of calipers, as above referred to, which will be comparatively simple and inexpensive to manufacture, reliable and eliicient in use7 and readily operated.

With the above and other objects in view, the present invention resides in the novel features of construction, formations7 combinations and arrangements of parts to be hereinafter more fully described, claimed and illustrated in the accompanying draw` ings forming a part of the present invention, and in which Figure l is a top plan view of the calipers;

Figure 2 is a bottom plan view thereof with the plate removed;

Figure 3 is an edge view;

Figure 4 is a longitudinal sectional view taken on the line 4-4 of Figure l;

Figure 5 is an enlarged detail view showing the actuating mechanism for the mov able caliper arm or point;

Figure 6 is an enlarged sectional view taken on the line tl-Gof Figure 5;

Figure 7 is a. transverse sectional view on an enlarged scale taken on the line 7 3' Figure 5; and

Figure`8 is a longitudinal sectional view on the line 8-3 of Figure 5.

Referring now to the accompanying drawings by corresponding characters of reference throughout the several views, the numeral 10 denotes in general my improved calipers which comprise a pair of plates ll and l2 pivotally connected at their lowerv ends as at 13 and forced yieldingly outwardly at their opposite ends by a spring la.

A threaded adjusting rod l5 is swivelled at 16 to the intermediate portion of the plate 12, while the opposite end thereof passes through a swivelled eye 17 carried on a corresponding` point upon the plate 11.

Milled adjusting nuts 18 engage the threaded rod upon opposite sides of the eye 17 and lock the said rod and plates ll and l2 in their adjusted positions.

A stationary frame l9 is secured tothe end 20 of the plate l2, while a pivoted arm 21 is pivotally connected at 22 to the outerV terminal of the end 23 of the plate l1, for L movement relative to each other.

A pivoted gauge 24k is attached at 25 to the arm 23 and passes through a guide 26 connected to the plate 20. This guide 26 likewise acts as a gauge to cooperate with the indication marks 27 upon the gauge 24 These indication marks are numerically numi bered so that when said marks register with the indicator 26, the distance between the points 28 and 29 will indicate the thickness of the material to be worked on.

A suitable linger piece 3() is secured to the plate l1 and is provided at its inner end with a guide 3l through which a sliding gauge 32 passes. locked in its various adjusted positions by screw shown at 33. The upper end of the gauge '32 is provided with a segmental head 34 adapted to engage the side of the material to be worked on and cooperates with This gauge 32 may be the points 28 and 29 ina manner to be later described.

The gauge 32 is provided with suitable in dication marks 35 which cooperate with the indicating mark 36 on the plate l1 and this gauge may be so set that when the points 28 and 29 are arranged to indicate the thickness of the material to be worked on, the head 34 vvill engage the side of the material at half the distance between the inner terminals of the points 28 and 29, so that When the material rests against the head 3a, the points 28 and 29 will engage diametrically Opposite points upon the material which is shown at 37.

Inorder to provide for a finer adjustment which Will gauge the material to be Worked on in the thousandths ot an inch, the arm 2l is pivotally connected to the segmental plate 23 as previously described and is prol vided at its inner end With a linger 38 having an inwardly directed point 39 which engages a. slot l0 formed in a lever il which is pivotally connectedat 42 to the plate l2.

A link d3 connects the tree end ot the lever ll to the intermediate portion ci a lever tl which is pivoted at l5 to the plate l2 at one end and at its opposite end as at 46 to a rod 47 which connects the latter With a sliding rack 48 mounted in a suitable guide plate 49 attached to the betere described plate l2. The rack 48 vengages with a pinion 50 and upon the movement ot the rack caused by the movement oi the arm 2l through the instrumentality of the before mentioned links and levers the pinion 5() will be rotated carrying with it the sha'lt 5l to which it is secured. The outer end of the shaft 5l has keyed thereto an indicator' point 52 Which cooperates with a segmental gauge 53 indicating in the thousandths et an inch the movement of the arm 2l.

The rack and its operative connections maybe sealed by a `plate 5d `which is provided With a finger grip shown at 55 by means of which and through the assistance of the linger grip 30 the calipers may be manipulated.

yFrom the foregoing' description taken in connection With Vthe accompanyingl drawings, it Will be manifest that a caliper is provided which yvill fulfil all of the neces-- sary requirements ot such a device, and it should be understood in this connection, that various minor changes in the specific details of construction can be resorted to within the scope oi the appended claims Without departing from the spirit or sacricing any or' the advantages of the invention,

Having thus fully described the invention, what We claim as new and desire to protect by Letters Patent is l. ln a pair of calipers, the combination ot a pair or' pivoted plates, a spring connecting said plates, a gauge cooperating With said plates to indicate the space between the swinging ends thereof, arms carried by said plates, one ot said arms beingl pivotally mounted, points carried by the arms, and an indicator carried by one of the plates and actuated by the movement ot said pivotally mounted arm for indicating fractions of an inch.

2. n a device of the character described, the combination ol a pair of plates, arms secured thereto, one of said arms being pivotally connected, points carried by the arms, a pivoted gauge attached to one plate and cooperating with the opposite plate, a sliding gauge disposed between the plates and cooperating with the points, and an indicator actuated by the pivoted arm, substantially as and tor the purposes set forth.

3. in a device of the character described, the combination of a pair otpivoted plates` arms connected to said plates, one of the arms being rigid and theot-her one movably connected to the plates, a pointer, a sha't't carrying` the pointer, a pinion carried by the shaft, a rack slidablyl engaging the pinion for rotating the shaft and actuating the pointer, and a link and lever connection between the pivoted arm and rack.

4. ln a device ot' the character described, a pair ot pivoted plates, a spring connecting the pivoted ends oit said plates, arms secured to the opposite ends ot' the plates, one ot said arms being .fixed on and the other being' pivotally mounted on .its respective plate, iinger grips carried by the plates, contact points carried by the arms, a slidable gauge carried by one ot the plates and cooperating' with said contact points, a gauge carried by the plates and cooperating therewith tor indicating' the diameter 'of Work placed in contact with theslidable gauge and the Contact points, and a gauge actuated by said pivotally mounted arm for indicating' in fractions of an inch variations in the distance between said contact points. ln wit-ness whereof We have hereunto set our hands. i

rannnniok r. `nicnas. ANG-Us Betreuerin. 

